?? inter.c
字號(hào):
/*
*********************************************************************************************************
* uC/OS-II
* The Real-Time Kernel
*********************************************************************************************************
*/
#include "C:\SOFTWARE\uCOS-II\interrupt\includes.h"
/*
*********************************************************************************************************
* CONSTANTS
*********************************************************************************************************
*/
#define TASK_STK_SIZE 512 /* Size of each task's stacks (# of WORDs) */
#define TASK_START_ID 0 /* Application tasks IDs */
#define TASK_CLK_ID 1
#define TASK_1_ID 2
#define TASK_2_ID 3
#define TASK_3_ID 4
#define TASK_START_PRIO 10 /* Application tasks priorities */
#define TASK_CLK_PRIO 11
#define TASK_1_PRIO 12
#define TASK_2_PRIO 13
#define TASK_3_PRIO 14
/*
*********************************************************************************************************
* VARIABLES
*********************************************************************************************************
*/
OS_STK TaskStartStk[TASK_STK_SIZE]; /* Startup task stack */
OS_STK TaskClkStk[TASK_STK_SIZE]; /* Clock task stack */
OS_STK Task1Stk[TASK_STK_SIZE]; /* Task #1 task stack */
OS_STK Task2Stk[TASK_STK_SIZE]; /* Task #2 task stack */
OS_STK Task3Stk[TASK_STK_SIZE]; /* Task #3 task stack */
OS_EVENT *InterruptSem;
/*
*********************************************************************************************************
* FUNCTION PROTOTYPES
*********************************************************************************************************
*/
void TaskStart(void *data); /* Function prototypes of tasks */
static void TaskStartCreateTasks(void);
static void TaskStartDispInit(void);
static void TaskStartDisp(void);
void TaskClk(void *data);
void Task1(void *data);
void Task2(void *data);
void Task3(void *data);
/*$PAGE*/
/*
*********************************************************************************************************
* MAIN
*********************************************************************************************************
*/
void main (void)
{
OS_STK *ptos;
OS_STK *pbos;
INT32U size;
PC_DispClrScr(DISP_FGND_WHITE); /* Clear the screen */
OSInit(); /* Initialize uC/OS-II */
InterruptSem=OSSemCreate(1);
PC_DOSSaveReturn(); /* Save environment to return to DOS */
PC_VectSet(uCOS, OSCtxSw); /* Install uC/OS-II's context switch vector */
ptos = &TaskStartStk[TASK_STK_SIZE - 1]; /* TaskStart() will use Floating-Point */
pbos = &TaskStartStk[0];
size = TASK_STK_SIZE;
OSTaskStkInit_FPE_x86(&ptos, &pbos, &size);
OSTaskCreateExt(TaskStart,
(void *)0,
ptos,
TASK_START_PRIO,
TASK_START_ID,
pbos,
size,
(void *)0,
OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
OSStart(); /* Start multitasking */
}
/*
*********************************************************************************************************
* STARTUP TASK
*********************************************************************************************************
*/
void TaskStart (void *pdata)
{
#if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
OS_CPU_SR cpu_sr;
#endif
INT16S key;
pdata = pdata; /* Prevent compiler warning */
TaskStartDispInit(); /* Initialize the display */
OS_ENTER_CRITICAL();
PC_VectSet(0x08, OSTickISR); /* Install uC/OS-II's clock tick ISR */
PC_SetTickRate(OS_TICKS_PER_SEC); /* Reprogram tick rate */
OS_EXIT_CRITICAL();
OSStatInit(); /* Initialize uC/OS-II's statistics */
TaskStartCreateTasks(); /* Create all the application tasks */
for (;;) {
TaskStartDisp(); /* Update the display */
if (PC_GetKey(&key) == TRUE) { /* See if key has been pressed */
if (key == 0x1B) { /* Yes, see if it's the ESCAPE key */
PC_DOSReturn(); /* Return to DOS */
}
}
OSCtxSwCtr = 0; /* Clear context switch counter */
OSTimeDlyHMSM(0, 0, 1, 0); /* Wait one second */
}
}
/*$PAGE*/
/*
*********************************************************************************************************
* INITIALIZE THE DISPLAY
*********************************************************************************************************
*/
static void TaskStartDispInit (void)
{
/* 1111111111222222222233333333334444444444555555555566666666667777777777 */
/* 01234567890123456789012345678901234567890123456789012345678901234567890123456789 */
PC_DispStr( 0, 0, " uC/OS-II, The Real-Time Kernel ", DISP_FGND_WHITE + DISP_BGND_RED + DISP_BLINK);
PC_DispStr( 0, 1, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 2, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 3, " Example #5 Interrupt ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 4, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 5, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 6, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 7, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 8, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 9, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 10, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 11, "Task1() : ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 12, "Task2() : ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 13, "Task3() : ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 14, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 15, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 16, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 17, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 18, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 19, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 20, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
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